.\" Automatically generated by Pod::Man 2.27 (Pod::Simple 3.28)
.\"
.\" Standard preamble:
.\" ========================================================================
.de Sp \" Vertical space (when we can't use .PP)
.if t .sp .5v
.if n .sp
..
.de Vb \" Begin verbatim text
.ft CW
.nf
.ne \\$1
..
.de Ve \" End verbatim text
.ft R
.fi
..
.\" Set up some character translations and predefined strings.  \*(-- will
.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
.\" double quote, and \*(R" will give a right double quote.  \*(C+ will
.\" give a nicer C++.  Capital omega is used to do unbreakable dashes and
.\" therefore won't be available.  \*(C` and \*(C' expand to `' in nroff,
.\" nothing in troff, for use with C<>.
.tr \(*W-
.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
.ie n \{\
.    ds -- \(*W-
.    ds PI pi
.    if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
.    if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\"  diablo 12 pitch
.    ds L" ""
.    ds R" ""
.    ds C` ""
.    ds C' ""
'br\}
.el\{\
.    ds -- \|\(em\|
.    ds PI \(*p
.    ds L" ``
.    ds R" ''
.    ds C`
.    ds C'
'br\}
.\"
.\" Escape single quotes in literal strings from groff's Unicode transform.
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\"
.\" If the F register is turned on, we'll generate index entries on stderr for
.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
.\" entries marked with X<> in POD.  Of course, you'll have to process the
.\" output yourself in some meaningful fashion.
.\"
.\" Avoid warning from groff about undefined register 'F'.
.de IX
..
.nr rF 0
.if \n(.g .if rF .nr rF 1
.if (\n(rF:(\n(.g==0)) \{
.    if \nF \{
.        de IX
.        tm Index:\\$1\t\\n%\t"\\$2"
..
.        if !\nF==2 \{
.            nr % 0
.            nr F 2
.        \}
.    \}
.\}
.rr rF
.\" ========================================================================
.\"
.IX Title "Mail::DKIM::PublicKey 3"
.TH Mail::DKIM::PublicKey 3 "2013-02-07" "perl v5.16.3" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "CONSTRUCTOR"
.IX Header "CONSTRUCTOR"
.SS "\fIfetch()\fP \- retrieve a public key record from \s-1DNS\s0"
.IX Subsection "fetch() - retrieve a public key record from DNS"
.Vb 5
\&  my $public_key = Mail::DKIM::PublicKey\->fetch(
\&                      Protocol => "dns",
\&                      Selector => "brisbane",
\&                      Domain => "example.com",
\&                    );
.Ve
.PP
If the public key is found, a Mail::DKIM::PublicKey object
is returned, representing the information found in \s-1DNS.\s0
If the public key does not exist in \s-1DNS,\s0 then \f(CW\*(C`undef\*(C'\fR is
returned.
If a \s-1DNS\s0 error occurs while fetching the key, then this method
will \f(CW\*(C`die\*(C'\fR.
If the public key was found, but is not valid (e.g. it is \*(L"revoked\*(R"),
then this method will \f(CW\*(C`die\*(C'\fR.
.SH "METHODS"
.IX Header "METHODS"
.SS "\fIgranularity()\fP \- get or set the granularity (g=) field"
.IX Subsection "granularity() - get or set the granularity (g=) field"
.Vb 1
\&  my $g = $public_key\->granularity;
\&
\&  $public_key\->granularity("*");
.Ve
.PP
Granularity of the key. The value must match the Local-part of the
effective \*(L"i=\*(R" tag of the DKIM-Signature header field.
The granularity is a literal value, or a pattern with a single '*'
wildcard character that matches zero or more characters.
.PP
If no granularity is defined, then the default value, '*', will
be returned.